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package org.netbeans.modules.javafx.bestpractices;

import java.awt.Component;
import java.util.HashSet;
import java.util.Set;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import org.openide.WizardDescriptor;
import org.openide.WizardValidationException;
import org.openide.filesystems.FileObject;
import org.openide.util.HelpCtx;
import org.openide.util.NbBundle;

/**
 *
 * @author Michal Skvor
 */
public class BestPracticesWizardPanel implements WizardDescriptor.Panel, WizardDescriptor.ValidatingPanel, WizardDescriptor.FinishablePanel {

    private WizardDescriptor wizardDescriptor;
    private BestPracticesVisualPanel component;
    
    private FileObject file;
    
    public BestPracticesWizardPanel( FileObject file ) {
        this.file = file;
    }
    
    FileObject getFile() {
        return file;
    }
    
    public Component getComponent() {
        if( component == null ) {
            component = new BestPracticesVisualPanel( this );
            component.setName( NbBundle.getMessage( BestPracticesWizardPanel.class, "LBL_CreateProjectStep" )); // NOI18N
        }
        return component;
    }

    public HelpCtx getHelp() {
        return new HelpCtx( BestPracticesWizardPanel.class );
    }

    public boolean isValid() {
        getComponent();
        return component.isValid( wizardDescriptor );
    }

    private final Set<ChangeListener> listeners = new HashSet<ChangeListener>(1); // or can use ChangeSupport in NB 6.0
    
    public void addChangeListener(ChangeListener l) {
        synchronized( listeners ) {
            listeners.add( l );
        }
    }

    public void removeChangeListener(ChangeListener l) {
        synchronized (listeners) {
            listeners.remove(l);
        }
    }
    
    protected final void fireChangeEvent() {
        Set<ChangeListener> ls;
        synchronized (listeners) {
            ls = new HashSet<ChangeListener>( listeners );
        }
        ChangeEvent ev = new ChangeEvent( this );
        for( ChangeListener l : ls ) {
            l.stateChanged( ev );
        }
    }

    public void readSettings(Object settings) {
        if (wizardDescriptor == null){
            ((WizardDescriptor) settings).putProperty(BestPracticesWizardIterator.PROJECT_NAME, null);
        }
        wizardDescriptor = (WizardDescriptor) settings;
        component.load( wizardDescriptor );
    }

    public void storeSettings(Object settings) {
        WizardDescriptor d = (WizardDescriptor) settings;
        component.store( d );
    }

    public boolean isFinishPanel() {
        return true;
    }

    public void validate() throws WizardValidationException {
        getComponent();
        component.isValid( wizardDescriptor );
    }
}
